Erythema multiforme is a skin disorder characterized by symmetrical, red, raised skin areas all over the body. The patches often look like "targets" (dark circles with purple-grey centres). The skin condition may be chronic and usually lasts for two to four weeks each time.

Causes:

• It is caused by the herpes simplex virus.
• An interaction with a certain medication
• Other infectious diseases
• Certain vaccines

Symptoms:

These are the common symptoms and it may vary person to person

• Sudden, red patches and blisters, usually on the palms of hands, soles of feet, and face
• Flat, round red "targets" (dark circles with purple-grey centres)
• Itching
• Cold sores
• Fatigue
• Joint pains
• Fever 

The symptoms of erythema multiforme may resemble other skin conditions. Always consult your physician for a diagnosis.